US3706352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic brake-safety control
Assignee: Individual
•
Filing: 1971-01-20
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Granted: 1972-12-19
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Expires: 1991-01-20
Abstract
Abstract A braking system for motor vehicles includes first means for applying substantially the same braking effect to the front and rear wheels at substantially the same time when the vehicle is moving in a straight line and second means for reducing the braking effect on the front wheels compared with that on the rear wheels when the front wheels are turned, the reduction being approximately in proportion to the degree of turn of the front wheels.
Inventors
- 👤 Colin Campbell Ferguson
- 👤 William Robert Fossey Bolton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:32
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/24; B60T8/246
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
159 words
A braking system including first means for applying substantially the same braking effect to the front and rear wheels at substantially the same time when the vehicle is moving in a straight line and second means for reducing the braking effect on the front wheels compared with that on the rear wheels when the front wheels are turned, the reduction being approximately in proportion to the degree of turn of the front wheels wherein the first means include a first hydraulic master cylinder for the back wheels, a second hydraulic master cylinder for the front wheels, a piston displaceable in each cylinder, the braking effect being approximately proportional to the piston displacement, and third means operable by the brake operating means for displacing the pistons, the second means comprising fourth means for reducing the effect of said third means in displacing the piston in the second cylinder approximately in proportion to the degree of turn of the front wheels.
Claim 2
Dependent Claim
159 words
A braking system including first means for applying substantially the same braking effect to the front and rear wheels at substantially the same time when the vehicle is moving in a straight line and second means for reducing the braking effect on the front wheels compared with that on the rear wheels when the front wheels are turned, the reduction being approximately in proportion to the degree of turn of the front wheels wherein the first means include a first hydraulic master cylinder for the back wheels, a second hydraulic master cylinder for the front wheels, a piston displaceable in each cylinder, the braking effect being approximately proportional to the piston displacement, and third means operable by the brake operating means for displacing the pistons, the second means comprising fourth means for reducing the effect of said third means in displacing the piston in the second cylinder approximately in proportion to the degree of turn of the front wheels.
Claim 3
Dependent Claim
127 words
A braking system as in claim 1 wherein the third means includes a first member coupled to the piston of the first cylinder and adapted on operative displacement of the brake operating means to displace that piston independently of the degree of turn of the front wheels, and the fourth means includes an elongated linkage having a variable effective length, adapted at one end to engage the piston of the second cylinder continuously and adapted at its other end to be engaged by the brake operating means, there being lost motion on operative displacement of the brake operating means between the brake operating means and the linkage when the front wheels are turned, the amount of the lost motion being approximately proportional to the degree of turn.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |